/*
 * Copyright (c) 2012 swing-on-fire Team
 * 
 * This file is part of Swing-On-Fire (http://code.google.com/p/swing-on-fire), licensed under the terms of the MIT
 * License (MIT).
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package com.google.code.swingonfire.showcase;

import java.awt.AlphaComposite;
import java.awt.Graphics;
import java.awt.Graphics2D;

import javax.swing.JComponent;
import javax.swing.JViewport;

import com.google.code.swingonfire.image.DoubleBufferImage;

public class FoobarViewport extends JViewport
{

    private static final long serialVersionUID = -6939821786851667069L;

    private final DoubleBufferImage doubleBufferImage;

    private double transparency;

    public FoobarViewport(JComponent component)
    {
        super();

        doubleBufferImage = new DoubleBufferImage();

        setOpaque(false);
        setView(component);

        component.setOpaque(false);
    }

    public double getTransparency()
    {
        return transparency;
    }

    public void setTransparency(double transparency)
    {
        this.transparency = transparency;

        repaint();
    }

    @Override
    public void paint(Graphics graphics)
    {
        super.paint(doubleBufferImage.getGraphics(this));

        Graphics2D g = (Graphics2D) graphics.create();

        g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, (float) transparency));
        g.drawImage(doubleBufferImage.getImage(), 0, 0, this);
    }

}
